108 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 22 



Small specimens were taken in Santa Cruz and Tanner Basins. The 

 species attains its maximum size and abundance in shallow (about 25 

 fm) depths in southern California. Its geographic range extends north- 

 ward to Alaska, in shallow littoral depths. 



Genus PHYLO Kinberg, 1866 



Phylonudus (Moore) 1911 

 Aricia nuda Moore, 191 1, pp. 31 1-315, pi. 21, figs. 172-176. 

 Hartman, 1957, p. 268. 



A specimen was taken in West Cortes Basin in 835 fms. The species 

 was first described from the vicinity of San Diego, California, in 497 

 fms. It has been more widely recorded from Burma in 68 meters (Fauvel, 

 1932, p. 162). It may be regarded as a deep water form. 



Genus SCOLOPLOS Blainville, 1828 



Scoloplos acmeceps profundus, new subspecies 

 Sc o/op/os acmeceps Chamberlin, 1919a, pp. 15-16. 

 Scoloplos acmeceps Hartman, 1957, pp. 282-283, pi. 30, figs. 1-7. 

 Scoloplos armiger Hartman and Barnard, this volume, p. 34. 



The type of the new subspecies is from East Cortes Basin (Sta. 

 5943) in 899 fms; others are from different places in East Cortes and 

 Long Basins and Patton escarpment. They differ from the stem species 

 in details believed to have subspecific significance. Thoracic neuropodia 

 are provided with spinigerous setae like those in notopodia. In addition, 

 they have an inferior series of simple yellow falcigers nearly smooth 

 along their free length except for slight serrations at the cutting edge. 

 The prostomium is equitriangular in shape, plain, and lacks eyespots. 

 The everted proboscis is a smooth sack. Branchiae are present from seg- 

 ment 1 1 as simple, inconspicuous filaments, and so continued throughout 

 the rest of the body. All parapodial lobes are unusually inconspicuous, 

 and thus unlike those in the stem species. 



The subspecies differs from the stem in the following respects: bran- 

 chiae are first present from segments 14 to 20 in the stem, and from 

 segments 11 to 13 in the subspecies. The transition from thorax to 

 abdomen occurs at segments 19 to 26 in the stem, and at segments 14 to 

 15 in the subspecies. The parapodia are moderately developed in the 

 stem, and very obscure in the subspecies. 



